The Pont du Gard is a notable ancient Roman aqueduct bridge that crosses the Gard River in southern France. It is part of a 50 km (31 mi) long aqueduct that runs between Uzčs and Nīmes in the South of France. It is located in Vers-Pont-du-Gard near Remoulins, in the Gard département. The aqueduct was constructed by the Romans in the first century AD and was added to UNESCO's list of World Heritage Sites in 1985. It is the highest of all Roman aqueduct bridges and is the best preserved after the Aqueduct of Segovia.

The bridge has three rows of arches, standing 48.8 m (160 ft) high, and formerly carried an estimated 200 million litres (44 million gallons) of water a day to the fountains, baths and homes of the citizens of Nīmes. The aqueduct descends in height by only 17 m (56 ft) over its entire length, indicative of the great precision that Roman engineers were able to achieve using only simple technology. It was possibly used until as late as the ninth century, well after the fall of Rome. [link]